Please refer also to the following link for details on this group:
Tipulidae = Link 1ñ
Crane flies are adapted to moist habitats; with some species being wholly aquatic while others are semiaquatic. The larvae of most species are plant feeders, although the tribes Hexatomini and Pedecini are mostly predaceous. Many of the species living in an aquatic environment feed extensively on larvae of Chironomidae and related insects, while some living in the banks of streams and ponds feed largely on worms (Clausen 1940/62).
Clausen, C. P. 1940. Entomophagous Insects. McGraw-Hill Book Co., NY. & London. 688 p.